CLN: Remove unused variables (#21986)

Author: mroeschke

pandas/core/arrays/categorical.py

@@ -348,7 +348,6 @@ def __init__(self, values, categories=None, ordered=None, dtype=None,
                                  " or `ordered`.")
 
             categories = dtype.categories
-            ordered = dtype.ordered
 
         elif is_categorical(values):
             # If no "dtype" was passed, use the one from "values", but honor

pandas/core/arrays/interval.py

@@ -401,7 +401,6 @@ def from_tuples(cls, data, closed='right', copy=False, dtype=None):
                     msg = ('{name}.from_tuples received an invalid '
                            'item, {tpl}').format(name=name, tpl=d)
                     raise TypeError(msg)
-                lhs, rhs = d
             left.append(lhs)
             right.append(rhs)
 

pandas/core/generic.py

@@ -1084,7 +1084,8 @@ def rename(self, *args, **kwargs):
         level = kwargs.pop('level', None)
         axis = kwargs.pop('axis', None)
         if axis is not None:
-            axis = self._get_axis_number(axis)
+            # Validate the axis
+            self._get_axis_number(axis)
 
         if kwargs:
             raise TypeError('rename() got an unexpected keyword '
@@ -5299,6 +5300,12 @@ def __copy__(self, deep=True):
         return self.copy(deep=deep)
 
     def __deepcopy__(self, memo=None):
+        """
+        Parameters
+        ----------
+        memo, default None
+            Standard signature. Unused
+        """
         if memo is None:
             memo = {}
         return self.copy(deep=True)

pandas/core/groupby/ops.py

@@ -582,7 +582,6 @@ def _transform(self, result, values, comp_ids, transform_func,
         elif values.ndim > 2:
             for i, chunk in enumerate(values.transpose(2, 0, 1)):
 
-                chunk = chunk.squeeze()
                 transform_func(result[:, :, i], values,
                                comp_ids, is_datetimelike, **kwargs)
         else:

pandas/core/indexes/base.py

@@ -993,6 +993,12 @@ def __copy__(self, **kwargs):
         return self.copy(**kwargs)
 
     def __deepcopy__(self, memo=None):
+        """
+        Parameters
+        ----------
+        memo, default None
+            Standard signature. Unused
+        """
         if memo is None:
             memo = {}
         return self.copy(deep=True)

pandas/core/indexes/category.py

@@ -133,7 +133,7 @@ def _create_from_codes(self, codes, categories=None, ordered=None,
         if name is None:
             name = self.name
         cat = Categorical.from_codes(codes, categories=categories,
-                                     ordered=self.ordered)
+                                     ordered=ordered)
         return CategoricalIndex(cat, name=name)
 
     @classmethod

pandas/core/indexes/interval.py

@@ -939,7 +939,6 @@ def _format_data(self, name=None):
                 summary = '[{head} ... {tail}]'.format(
                     head=', '.join(head), tail=', '.join(tail))
             else:
-                head = []
                 tail = [formatter(x) for x in self]
                 summary = '[{tail}]'.format(tail=', '.join(tail))
 

pandas/core/internals/blocks.py

@@ -1248,7 +1248,7 @@ def take_nd(self, indexer, axis, new_mgr_locs=None, fill_tuple=None):
         if fill_tuple is None:
             fill_value = self.fill_value
             new_values = algos.take_nd(values, indexer, axis=axis,
-                                       allow_fill=False)
+                                       allow_fill=False, fill_value=fill_value)
         else:
             fill_value = fill_tuple[0]
             new_values = algos.take_nd(values, indexer, axis=axis,
@@ -2699,7 +2699,6 @@ def _try_coerce_args(self, values, other):
 
         values_mask = isna(values)
         values = values.view('i8')
-        other_mask = False
 
         if isinstance(other, bool):
             raise TypeError
@@ -2872,11 +2871,9 @@ def _try_coerce_args(self, values, other):
         values_mask = _block_shape(isna(values), ndim=self.ndim)
         # asi8 is a view, needs copy
         values = _block_shape(values.asi8, ndim=self.ndim)
-        other_mask = False
 
         if isinstance(other, ABCSeries):
             other = self._holder(other)
-            other_mask = isna(other)
 
         if isinstance(other, bool):
             raise TypeError

pandas/core/nanops.py

@@ -479,7 +479,9 @@ def nanvar(values, axis=None, skipna=True, ddof=1):
 
 @disallow('M8', 'm8')
 def nansem(values, axis=None, skipna=True, ddof=1):
-    var = nanvar(values, axis, skipna, ddof=ddof)
+    # This checks if non-numeric-like data is passed with numeric_only=False
+    # and raises a TypeError otherwise
+    nanvar(values, axis, skipna, ddof=ddof)
 
     mask = isna(values)
     if not is_float_dtype(values.dtype):
@@ -635,7 +637,6 @@ def nankurt(values, axis=None, skipna=True):
         adj = 3 * (count - 1) ** 2 / ((count - 2) * (count - 3))
         numer = count * (count + 1) * (count - 1) * m4
         denom = (count - 2) * (count - 3) * m2**2
-        result = numer / denom - adj
 
     # floating point error
     #

pandas/core/series.py

@@ -2052,7 +2052,6 @@ def dot(self, other):
             lvals = left.values
             rvals = right.values
         else:
-            left = self
             lvals = self.values
             rvals = np.asarray(other)
             if lvals.shape[0] != rvals.shape[0]:
@@ -2480,7 +2479,8 @@ def sort_values(self, axis=0, ascending=True, inplace=False,
         dtype: object
         """
         inplace = validate_bool_kwarg(inplace, 'inplace')
-        axis = self._get_axis_number(axis)
+        # Validate the axis parameter
+        self._get_axis_number(axis)
 
         # GH 5856/5853
         if inplace and self._is_cached:
@@ -2652,7 +2652,8 @@ def sort_index(self, axis=0, level=None, ascending=True, inplace=False,
         # TODO: this can be combined with DataFrame.sort_index impl as
         # almost identical
         inplace = validate_bool_kwarg(inplace, 'inplace')
-        axis = self._get_axis_number(axis)
+        # Validate the axis parameter
+        self._get_axis_number(axis)
         index = self.index
 
         if level is not None:
@@ -3073,7 +3074,8 @@ def _gotitem(self, key, ndim, subset=None):
         versionadded='.. versionadded:: 0.20.0',
         **_shared_doc_kwargs))
     def aggregate(self, func, axis=0, *args, **kwargs):
-        axis = self._get_axis_number(axis)
+        # Validate the axis parameter
+        self._get_axis_number(axis)
         result, how = self._aggregate(func, *args, **kwargs)
         if result is None:
 
@@ -3919,8 +3921,8 @@ def dropna(self, axis=0, inplace=False, **kwargs):
         if kwargs:
             raise TypeError('dropna() got an unexpected keyword '
                             'argument "{0}"'.format(list(kwargs.keys())[0]))
-
-        axis = self._get_axis_number(axis or 0)
+        # Validate the axis parameter
+        self._get_axis_number(axis or 0)
 
         if self._can_hold_na:
             result = remove_na_arraylike(self)